<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style>
			.outbox{
				width: 100%;
				height: 500px;
				margin: 2px;
				border: 1px #D3D3D3;
				padding: 10px;
				background-color: lightgray;
			}
			.box1{
				background-color: greenyellow;
				width: 100%;
				height: 400px;
				margin: 50px;
			}
			.box2{
				background-color: red;
				width: 100%;
				height: 300px;
				margin: 50px;
				
			}
		</style>
	</head>
	<body>
		<div class="outbox">
			<div class="box1">
				<div class="box2"></div>
			</div>
			
		</div>
	</body>
</html>
